Array of aircraft seats

ABSTRACT

Sleeper seats, wherein each comprises a head rest, a back rest, a seat pan or seat cushion, a leg rest, an ottomans and a dividers between the individual seats with the their column. The four seats are arranged in a staggered chevron formation and two columns. All the seats in each column are parallel with each other and set at a “herringbone” angle α to the column direction, in other words their central axes A make the angle α with a longitudinal axis of the array. 
     Each seat extends from its column side of the longitudinal axis across the axis to a small extent. Along the axis, first a seat from one column crosses the axis and then a seat from the other column crosses the axis and so on.

CROSS REFERENCE TO RELATED APPLICATION

This application takes priority from and claims the benefit ofProvisional Application Ser. No. 61/188,568 filed on Aug. 11, 2008 thecontents of which are hereby incorporated by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an array of aircraft seats.

2. Description of the Related Art

Aircraft passenger seats are arrayed in an aircraft cabin in accordancewith a Layout of Passenger Accommodation, known in the art as a LOPA. ALOPA generally refers to the layout for an entire aircraft and includesnot only seating, but also galleys and lavatories. The present inventionrelates to an array primarily, but not exclusively, for sleeper seats;that is seats that are convertible from sitting mode to sleeping mode.Such seats usually comprise a proportion only of the total seating in acabin. Accordingly in this specification, the term “array of aircraftseats” of aircraft seats is used to denote arrangement of a proportion,or indeed possibly the totality, the seats in an overall LOPA.

In design of a LOPA, a major consideration is efficient utilisation ofthe cabin that is maximising the number of seats or at least maximisingrevenue from the seats, bearing in mind that sleeper seats command asubstantial premium with respect to economy seats.

SUMMARY OF THE INVENTION

The object of the present invention is to provide an improved array ofaircraft seats

According to the invention there is provided an array of aircraft seatscomprising:

-   -   two columns of seats arranged for array along an aircraft cabin        on respective sides of a longitudinal axis of the array;        -   the seats having respective central axes,        -   the seats in each column having their central axes angled            with respect to the longitudinal axis,        -   the seats in one column being offset along the longitudinal            axis with respect to the corresponding seats in the other            column, whereby the intersections with the longitudinal axis            of the central axes of the seats of one column are            interdigitated with the intersections with the longitudinal            axis of the central axes of the seats of the other column            and        -   minor, overlapping, inner-end portions of any two seats            arranged for-and-aft of each other in one column extending            across the longitudinal axis from their major portions at            their intersections and an intervening seat in the other            column having a minor, overlapping, inner-end portion            extending oppositely across the longitudinal axis from its            major portion at its intersection; and    -   a serpentine divider extending generally along the longitudinal        axis between the seats of the two columns, following the extent        of the minor overlapping portions across the longitudinal axis.

Preferably, the seats are sleeper seats.

Whilst non-symmetrical arrangements can be envisaged, in the preferredembodiments, the minor, overlapping, inner-end portions of the twocolumns overlap the longitudinal axis by equal extents.

Preferably, the extent of the overlap of the minor, overlapping,inner-end portions is between 3% and 6% of the overall width of thearray.

Again in the preferred embodiments, all the seats are arranged withtheir central axes at substantially the same angle with respect to thelongitudinal axis.

In one preferred embodiment, the seats are arranged in a staggeredchevron array, that is with the seats in one column angled with respectto the seats in the other column, and with the central axes of all theseats in one column making with the longitudinal axis substantially thesame angle measured in the clockwise (or anti-clockwise) direction asthe central axes of all the seats in the other column make with thelongitudinal axis measured in the anti-clockwise (or clockwise)direction.

In a staggered chevron array, the seats all face in the same directionwith respect to the column axis, and preferably outwards of the array,that is with their portions extending across the axis being at the headends of the seats. Preferably, the array is arranged so that the seatsare forwards and outwards facing in the aircraft cabin.

In another embodiment, known as the “parallel array”, the seats in onecolumn face in one direction and the seats in the other column face inthe other direction and again all preferably outwards. Whilst each seatin one column could be aligned with an oppositely facing seat in theother column, they are preferably offset from each other.

Preferably, the array includes on opposite sides of aisles outboard ofthe two columns of seats, two side columns of angled seats are setagainst cabin side walls, one side column on one side of the two columnarray along the longitudinal axis and the other on the other side.Normally these seats will be both outwards and forwards facing.

BRIEF DESCRIPTION OF THE DRAWINGS

To help understanding of the invention, a specific embodiment thereofwill now be described by way of example and with reference to theaccompanying drawings, in which:

FIG. 1 is a plan view of a short array of four sleepers seats arrayed infirst embodiment in accordance with the invention;

FIG. 2 is a LOPA view of the seats of FIG. 1 in an aircraft cabin;

FIG. 3 is an equivalent LOPA to that of FIG. 2 showing a cabin equippedwith conventional seats;

FIG. 4 is a plan view of a short array of four sleepers seats arrayed insecond embodiment in accordance with the invention; and

FIG. 5 is a LOPA view of the seats of FIG. 1 in another aircraft cabin;and

FIG. 6 is an equivalent LOPA to that of FIG. 5 showing a cabin equippedwith conventional seats.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to FIGS. 1 & 2, the sleeper seats 1 are shown there insleeping mode. Each comprises a head rest 2, a back rest 3, a seat panor seat cushion 4 and a leg rest 5, all of which move in a conventionalmanner when the seat is moved from sleeping mode to sitting mode. Theseats also include ottomans 6 and dividers 7 between the individualseats with the their column. The four seats shown in FIG. 1 are arrangedin a staggered chevron formation and two columns 8, 9. All the seats ineach column are parallel with each other and set at a “herringbone”angle α to the column direction, in other words their central axes Amake the angle α with a longitudinal axis 10 of the array. The seatsbeing arranged in the staggered chevron array, the seats in one columnare angled with respect to the seats in the other column, and thecentral axes of all the seats in one column make with the longitudinalaxis substantially the same angle measured in the clockwise (oranti-clockwise) direction as the central axes of all the seats in theother column make with the longitudinal axis measured in theanti-clockwise (or clockwise) direction.

Each seat extends from its column side of the longitudinal axis acrossthe axis to a small extent 11. Along the axis, first a seat from onecolumn crosses the axis and then a seat from the other column crossesthe axis and so on. The seats on opposite sides of the axis are screenedfrom each other by a serpentine divider 12, which passes from one sideof the axis 10 to the other side along the longitudinal axis. At joints15, just on an individual seat's side of the longitudinal axis, theserpentine divider forks from the seat's own divider 7 from the nextseat in the respective column. In effect the serpentine divider iscomprised of successive longitudinal axis portions 15 of the dividers 7,which are made as a continuous piece from their inboard ends 16 to theiroutboard ends 17.

In addition to the seats extending to the small extent 11 across thelongitudinal axis, bed side areas 18 at end 19 also extend across theaxis.

Typically for a herringbone angle α of 34° and an array width 20 of 93.5inches (2375 mm), the extent of the overlap is 3.3 inches (84 mm) in thewidthwise direction, i.e. 3.5% of the array width. In another example(not illustrated) for an array of 85.4 inches (2169 mm) and aherringbone angle of 30° the overlap is also 3.9 inches (99 mm), i.e.4.6% of the array width.

As shown in FIG. 2, which is a three class/fare LOPA, the seats 1arrayed in accordance with the invention are installed in a businessclass section 21 of the cabin. Similar, single column, herringbonearrayed seats 51 are provided along the side wall 52 of the cabin.

It can be noted that array of FIG. 1 has advantages, which can beappreciated from FIG. 2 by comparison with FIG. 3, which shows anequivalent business class passenger count LOPA, it is necessary toutilise conventional business class seats 22 arrayed three abreast alongthe centre of the cabin. This requires central passengers to step overtheir neighbours for aisle access, as is required window seat passengersseated against the side wall of the cabin. By contrast, the seats 1arrayed in accordance with the invention all have direct aisle access.Further, it will be noted that the array in accordance with theinvention allows an increase by sixteen in the number of economy classseats 23.

Turning now to FIGS. 4 & 5, again the sleeper seats 101 are shown therein sleeping mode. Each comprises a head rest 102, a back rest 103, aseat pan or seat cushion 104, an ottoman 105, a foot rest 106 and adivider 107 analogous to those of the first embodiment. Again the seatsare arranged on both sides of the longitudinal axis 110 in two columns108,109. However, they are all parallel to each other as opposed tobeing arranged in chevron formation. The central axes A of all the seatsin both columns make with the longitudinal axis substantially the sameangle α measured in the clockwise (or anti-clockwise) direction.

Again, each seat extends from its column side of the longitudinal axisacross the axis to a small extent 111. Along the axis, first a seat fromone column crosses the axis and then a seat from the other columncrosses the axis and so on. The seats on opposite sides of the axis arescreened from each other by a serpentine divider 112, again integratedwith the inter-seat dividers.

The seats on opposite sides of the serpentine dividers are arranged headto head, but with a slight offset 131 in their own longitudinal axes132.

In addition to the seats extending to the small extent 111 across thelongitudinal axis, so do bed side areas 118 at end 119.

Typically for an array angle α of 29° and an array width 120 of 83.5inches (2121 mm), the extent of the overlap is 4.6 inches (117 mm) inthe widthwise direction, i.e. 5.5% of the array width.

Turning now to FIG. 5, which is a two passenger class LOPA, bycomparison with FIG. 6 with an equivalent conventional in line businessclass cabin, the array in accordance with this embodiment of theinvention, again allows an increase in the total number of passengersaccommodated.

1. An array of aircraft seats comprising: two columns of seats arrangedfor array along an aircraft cabin on respective sides of a longitudinalaxis of the array; the seats having respective central axes, the seatsin each column having their central axes angled with respect to thelongitudinal axis, the seats in one column being offset along thelongitudinal axis with respect to the corresponding seats in the othercolumn, whereby the intersections with the longitudinal axis of thecentral axes of the seats of one column are interdigitated with theintersections with the longitudinal axis of the central axes of theseats of the other column and minor, overlapping, inner-end portions ofany two seats arranged for-and-aft of each other in one column extendingacross the longitudinal axis from their major portions at theirintersections and an intervening seat in the other column having aminor, overlapping, inner-end portion extending oppositely across thelongitudinal axis from its major portion at its intersection; and aserpentine divider extending generally along the longitudinal axisbetween the seats of the two columns, following the extent of the minoroverlapping portions across the longitudinal axis.
 2. An array ofaircraft seats according to claim 1, wherein the minor, overlapping,inner-end portions of the two columns overlap the longitudinal axis byequal extents.
 3. An array of aircraft seats according to claim 1,wherein the extent of the overlap of the minor, overlapping, inner-endportions is between 3% and 6% of the overall width of the array.
 4. Anarray of aircraft seats according to claim 1, wherein all the seats arearranged with their central axes at substantially the same angle withrespect to the longitudinal axis.
 5. An array of aircraft seatsaccording to claim 4, wherein the seats are arranged in a staggeredchevron array, that is with the seats in one column angled with respectto the seats in the other column, and with the central axes of all theseats in one column making with the longitudinal axis substantially thesame angle measured in the clockwise (or anti-clockwise) direction asthe central axes of all the seats in the other column make with thelongitudinal axis measured in the anti-clockwise (or clockwise)direction.
 6. An array of aircraft seats according to claim 5, whereinthe seats are all arranged to face outwards from the longitudinal axis,the inner-ends of the seats being head ends thereof.
 7. An array ofaircraft seats according to claim 6, wherein the seats are all arrangedto face forwards of the aircraft cabin in which they are to be arrayed.8. An array of aircraft seats according to claim 5, wherein the seatsare all arranged to face in towards the longitudinal axis, theinner-ends of the seats being foot ends thereof.
 9. An array of aircraftseats according to claim 4, wherein the seats in one column are arrangedsubstantially parallel with the seats in the other column, that is withthe central axes of all the seats in both columns making with thelongitudinal axis substantially the same angle measured in the clockwise(or anti-clockwise) direction.
 10. An array of aircraft seats accordingto claim 9, wherein each seat in one column is aligned with an oppositefacing seat in the other column, i.e. their central axes are coincident.11. An array of aircraft seats according to claim 9, wherein each seatin one column is offset from an opposite facing seat in the othercolumn, i.e. their central axes are offset from each other.
 12. An arrayof aircraft seats according to claim 1, including at least one furthercolumn of seats spaced by an aisle from the neighbouring one of the twocolumns of seats: the seats of the further column having respectivecentral axes and the seats in the further column having their centralaxes angled with respect to the longitudinal axis.
 13. An array ofaircraft seats according to claim 11, wherein the seats of the or eachfurther column are outwards and forwards facing.
 14. An array ofaircraft seats according to claim 1, wherein the seats are sleeperseats.
 15. An array of aircraft seats according to claim 1, includingdividers between the seats, the serpentine divider being comprised ofsuccessive longitudinal axis portions of the dividers between the seats.